/Engine/Source/Editor/DataLayerEditor/Public/DataLayer/DataLayerEditorSubsystem.h
Adds the actor to the DataLayer.
true if the actor was added. false is returned if the actor already belongs to the DataLayer.
bool AddActorToDataLayer ( [AActor](API\Runtime\Engine\GameFramework\AActor) * Actor, [UDataLayerInstance](API\Runtime\Engine\WorldPartition\DataLayer\UDataLayerInstance) * DataLayer )